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Botany Chpt 10
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Bacteriophages (phages)
Bacterial viruses
Proteins contain __________ but DNA does not?
Sulfur
DNA and RNA are _________ ________ consisting of long chains of chemical units.
nucleic acids
Nucleaotides
long chains (polymers) of chemical units (monomers) that make up DNA and RNA
4 types of nucleotides that make up DNA and RNA
(A) Adenine
(C) Cytosine
(T) Thymine
(G) Guanine
Nucleotides consists of three components?
1. A nitrogenous base
2. a sugar
3. A phosphate group
________ are joined to one another by covalent bonds between the sugar of one __________ and the phosphate of the next.
Nucleotide
A repeating pattern of sugar-phosphate-sugar-phosphate.
sugar-phosphate backbone
The four nucleotides found in DNA differ only in their _____________ __________.
nitrogenous bases
_________and _______ are single-ring structures called pyrimidines.
Thymine (T) and Cytosine (C)
Pyrimidines?
single-ring structures of thymine and cytosine
__________ and _________ are larger double-ring structures called purines.
Adenine (A) and Guanine (G)
Purines?
larger, double-ring structures of adenine and guanine
How is RNA different from DNA?
1. sugar ring has --OH group attached to the C atom
2. Instead of thymine RNA has uracil (U)
Double Helix?
Two polynucleotide strands combined that make up DNA
A double-ringed base (purine) should always be paired with a ______-_______ on the opposite strand
single-ringed base
Semiconservative model?
The model for DNA replication
Author
1coderules
ID
116827
Card Set
Botany Chpt 10
Description
Botany chapter 10 study cards
Updated
11/15/2011, 1:38:14 AM
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